Drill



R. FOSTER Aug. 30, 1938.

DRILL 2 Sheets-Sheet 1 Attorneys A 938- R. FOSTER 2,123,240;

' DRILL Filed Aug. 21, 1956 2 Sheets-Sheet 2 IIIIIIIIIIIIII| Inventor 2 702.97?" E's-fer By gmdoi iw.

Patented Aug. 30, 1938 2,128,240

UNITED STATES PATENT OFFICE mum.

Robert Foster, Bradley, Ohio Application August 21, 1936, Serial No. 97,266 2 Claims. (01. 255 -20) This invention appertains to new and useful The tool'assembly may include a number of improvements in drills, and more particularly to sections 31 and certain of these sections may be a drill of the horizontal operative type. provided with screw threads 38 for guiding the The principal object of the present invention drill bit 32. The section 31 which connects to is to provide a drill which will be effective in drillthe pipe sections 30 is provided with an internally 5 ing horizontally in place of vertically and at threaded socket 38 for receiving the adjacent slants which operation is adopted at present'in threaded end of the pipe section 30 and in this various practices in mines. is a packing gland 39. (See Fig. 4.) Further- Other very important objects and advantages more, it can be seen that the conduit 21 extends of the invention will become apparent to the entirely through the shaft 26,pipe section 30 and 10 reader of the following specification. into the tool section 31.

In the drawings: While the foregoing specification sets forth Figure 1 represents a side elevational view of the invention in specific terms, it is to be underthe machine. stood that numerous changes in the shape, size Fig. 2 represents an end elevational view of and materials may be resorted to without de- 15 the machine. parting from the spirit and scope of the inven- Fig. 3 is a fragmentary longitudinal sectional tion as claimed hereinafter. view through the drill tool. Having described the invention, what is claimed Fig. 4 is a fragmentary longitudinal sectional as new is: 0 view through the tool drive and fluid conduit. 1. In a drilling machine, a platform, axles Referring to the drawings wherein like nusupported from the underside of the platform, merals designate like parts, it can be seen that wheels carried by the axles, a trackway for the numeral 5 represents a platform for the machine wheels, drilling means mounted upon the platwhich is provided with the axles 8 on which are form, a drum rotatably mounted under the rear 2 the flanged wheels 1 capable of riding on rails end of the platform, a ratchet wheel carried by 8. To move the wheeled platform on the rails 3, the drum, an oscillatory hand bar supported for a clevis 9 is provided on the forward end of the rocking movement from the rear end of the platplatform 5 and from this a cable l0 extends to form and provided with a pawl for engagement pass over the pulley II and return thru guides with the said ratchet wheel, a cable having one so under the platform 5 to the drum l2, supported end attached to the front end of the platform, by the brackets i 3 on the rear end of the plata block over which the cable extends and anform 5. The drum I2 is provided with the ratchet choring means for the block adapted to be placed wheel H which can be operated by the pivotal in advance of the platform, said cable extending lever l5 and pawl l6 thereon for winding the rearwardly from the block and between the axles drum and drawing the platform toward the wall and the bottom of the platform and having its 35 I! to be bored. In this wall I1 is the anchor l3 opposite end wound on the drum, and a dog norhaving an eye with which the hook it on the mally engaging the ratchet wheel. pulley II is engaged. 2. Drilling means of the class described com- Mounted on the platform 5 is the electric motor prising a track, a wheeled platform having its 20, the armature shaft 2i of which is provided wheels engaging the track, manually operated 40 with a pinion meshing with the large gear 22 means for moving the platform on the track, an on the shaft 23 supported on the bearing block upright frame on the platform, a horizontally 23. The shaft 23 is provided with the pinion 24 arranged tubular shaft supported on the platmeshing with the gear 25 on the shaft 26. This form, means for rotating said shaft, a tubular gear shaft 26 is hollow and has the conduit 21 shaft section, a union connecting the said shaft 45 extending t ere ugh. section with the tubular shaft, a hollow drill A fluid pipe line 23 connects to one end of line, a coupling connecting the same with the the conduit 21. A union 29 connects the fortubular shaft section, a pipe extending through ward end of the hollow shaft 28 to the pipe secthe tubular pipe, through the tubular section tion 30. and into the drill line, packing means in the 50 Numeral 3i represents generally the drilling coupling and around the pipe, means for contool which is provided with the head portion 32 necting the pipe with a liquid supply and power of a blade formation and through which opens means on the platform for rotating the tubular the ducts 33 from the main duct 34 therein, which shaft. main duct opens into the fluid receivingchamber ROBERT FOSTER. 55

35 of the shank portion 36 of the tool head. 

